tiny_mc.c
Simulates light propagation from a point source in an infinite medium with isotropic scattering. The entire source for this program fits on a single page and is a good way to get an overview of the entire Monte Carlo process. One of my graduate students put together this page of comments about trying to use mc_tiny.c.
small_mc.c
Simulates light propagation from normal irradiation of a semi-infinite medium with anisotropic scattering. It calculates the volumetric heating as a function of depth. This program takes two whole pages, but is very handy for a bunch of problems.
time_mc.c
Simulates the time resolved backscattering of a semi-infinite medium with anisotropic scattering. This program is adapted from small_mc.c above, and shows how simply time resolved simulations can be done.